(3y²+1/2x)(1/2x-3y²)、(x-1/2)(x+1/2)(x²+1/4)、(x+y)(x-y)+(x+2y)(x-2y)

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(3y²+1/2x)(1/2x-3y²)、(x-1/2)(x+1/2)(x²+1/4)、(x+y)(x-y)+(x+2y)(x-2y)(3y²+1/2x)(1/

(3y²+1/2x)(1/2x-3y²)、(x-1/2)(x+1/2)(x²+1/4)、(x+y)(x-y)+(x+2y)(x-2y)
(3y²+1/2x)(1/2x-3y²)、(x-1/2)(x+1/2)(x²+1/4)、(x+y)(x-y)+(x+2y)(x-2y)

(3y²+1/2x)(1/2x-3y²)、(x-1/2)(x+1/2)(x²+1/4)、(x+y)(x-y)+(x+2y)(x-2y)
(3y²+1/2x)(1/2x-3y²)
=(1/2x+3y²)(1/2x-3y²)
=(1/2x)²-(3y²)²
=x²/4-9y⁴
(x-1/2)(x+1/2)(x²+1/4)
=(x²-1/4)(x²+1/4)
=x⁴-1/16
(x+y)(x-y)+(x+2y)(x-2y)
=x²-y²+x²-4y²
=2x²-5y²

1、(3y²+1/2x)(1/2x-3y²)
=(1/2X)^2-(3Y^2)^2
=1/4X^2-9Y^4

2、(x-1/2)(x+1/2)(x²+1/4)
=(X^2-1/4)(X^2+1/4)
=X^4-1/16.

3、(x+y)(x-y)+(x+2y)(x-2y)
=X^2-Y^2+X^2-4Y^2
=2X^2-5Y^2.